Antarctica’s melting ice sheet could retreat much faster than previously thought.
Antarctica’s melting ice sheet could retreat much faster than previously
thought, new research suggests. The evidence comes from markings on the
seafloor off Norway that record the pull-back of a melting European ice
sheet thousands of years ago.
Today, the fastest withdrawing glaciers in
Antarctica are seen to retreat by up to 30m a day. But if they sped up, the
extra melt water would have big implications for sea-level rises around the
globe. Ice losses from Antarctica caused by climate change have already
pushed up the surface of the world’s oceans by nearly 1cm since the 1990s.
The researchers found that with the Norwegian sheet, the maximum retreat
was more than 600m a day.
BBC 5th April 2023
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